20212012142 has 32 divisors (see below), whose sum is σ = 35510441472. Its totient is φ = 8447602464.

The previous prime is 20212012103. The next prime is 20212012157. The reversal of 20212012142 is 24121021202.

It is a self number, because there is not a number n which added to its sum of digits gives 20212012142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363548 + ... + 415440.

It is an arithmetic number, because the mean of its divisors is an integer number (1109701296).

Almost surely, 2^20212012142 is an apocalyptic number.

20212012142 is a deficient number, since it is larger than the sum of its proper divisors (15298429330).

20212012142 is a wasteful number, since it uses less digits than its factorization.

20212012142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52592.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20212012142 its reverse (24121021202), we get a palindrome (44333033344).

The spelling of 20212012142 in words is "twenty billion, two hundred twelve million, twelve thousand, one hundred forty-two".